MX3052E - IMPROVEMENTS TO AN APPARATUS TO EXAMINE BIOLOGICAL TISSUE MEASURING THE ABSORPTION OF RANGE RANGE OR X-RAY - Google Patents

IMPROVEMENTS TO AN APPARATUS TO EXAMINE BIOLOGICAL TISSUE MEASURING THE ABSORPTION OF RANGE RANGE OR X-RAY

Info

Publication number
MX3052E
MX3052E MX100183U MX10018374U MX3052E MX 3052 E MX3052 E MX 3052E MX 100183 U MX100183 U MX 100183U MX 10018374 U MX10018374 U MX 10018374U MX 3052 E MX3052 E MX 3052E
Authority
MX
Mexico
Prior art keywords
detector
radiation
radiation source
range
output signal
Prior art date
Application number
MX100183U
Other languages
Spanish (es)
Inventor
Erik Dissing
Original Assignee
Atomenregi Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Atomenregi Ab filed Critical Atomenregi Ab
Publication of MX3052E publication Critical patent/MX3052E/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/48—Diagnostic techniques
    • A61B6/482—Diagnostic techniques involving multiple energy imaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/50—Clinical applications
    • A61B6/505—Clinical applications involving diagnosis of bone

Abstract

La presente invención se refiere a mejoras a un aparato para examinar tejido biológico midiendo la absorción de los Rayos Gama o de los Rayos X, el cual incluye al menos dos substancias diferentes del tipo que comprende una fuente de radiación radioactiva que emite haces de radiación gama o rayos X, un detector para detectar las radiaciones emitidas por la fuente de radiación; que el detector produce una señal de salida que depende de la intensidad de radiación que cae sobre el detector, mecanismos para sostener la fuente de radiación y al detector en forma tal que el haz es dirigido hacia el detector y que así la muestra puede ser colocada entre la fuente de radiación y el detector mientras es pasada por el haz de radiación; y mecanismos para procesar la señal de salida, caracterizadas en que la fuente de radiación emite fotones de al menos dos energías diferentes; que el detector produce impulsos de salida por cada fotón incidente que la amplitud de la pulsación es proporcional a la energía del fotón; que el mecanismo de procesamiento incluye un primer discriminador de impulsos conectados a la salida de el detector y que pasa impulsos correspondientes a una primera energía de fotón; y un primer medidor de proporción logarítmica conectando al primer discriminador de impulsos el cual produce una primera señal de salida proporcional al logaritmo de la frecuencia de impulsos de entrada al mismo.The present invention relates to improvements to an apparatus for examining biological tissue by measuring the absorption of Gamma Rays or X-Rays, which includes at least two different substances of the type comprising a radioactive radiation source that emits gamma radiation beams or X-rays, a detector to detect the radiation emitted by the radiation source; that the detector produces an output signal that depends on the intensity of radiation falling on the detector, mechanisms to hold the radiation source and the detector in such a way that the beam is directed towards the detector and thus the sample can be placed between the radiation source and the detector as it is passed through the radiation beam; and mechanisms to process the output signal, characterized in that the radiation source emits photons of at least two different energies; that the detector produces output pulses for each incident photon that the pulse width is proportional to the energy of the photon; that the processing mechanism includes a first pulse discriminator connected to the detector output and passing pulses corresponding to a first photon energy; and a first logarithmic ratio meter connecting to the first pulse discriminator which produces a first output signal proportional to the logarithm of the input pulse frequency thereto.

MX100183U 1973-05-11 1974-05-10 IMPROVEMENTS TO AN APPARATUS TO EXAMINE BIOLOGICAL TISSUE MEASURING THE ABSORPTION OF RANGE RANGE OR X-RAY MX3052E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7306721A SE373279B (en) 1973-05-11 1973-05-11 PROCEDURE AND DEVICE FOR EXAMINING A PART OF A BIOLOGICAL TISSUE

Publications (1)

Publication Number Publication Date
MX3052E true MX3052E (en) 1980-03-05

Family

ID=20317447

Family Applications (1)

Application Number Title Priority Date Filing Date
MX100183U MX3052E (en) 1973-05-11 1974-05-10 IMPROVEMENTS TO AN APPARATUS TO EXAMINE BIOLOGICAL TISSUE MEASURING THE ABSORPTION OF RANGE RANGE OR X-RAY

Country Status (7)

Country Link
US (1) US3944830A (en)
JP (1) JPS5048993A (en)
CA (1) CA1006989A (en)
DE (1) DE2421649A1 (en)
GB (1) GB1446818A (en)
MX (1) MX3052E (en)
SE (1) SE373279B (en)

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DE3123685A1 (en) * 1980-06-19 1982-03-18 Fuji Electric Co., Ltd., Kawasaki, Kanagawa METHOD FOR MEASURING THE WALL THICKNESS OF TUBULAR OBJECTS
JPS6193936A (en) * 1984-10-13 1986-05-12 Furukawa Electric Co Ltd:The Method for analyzing composition of material to be measured by radiation
JPS61109557A (en) * 1984-11-02 1986-05-28 帝人株式会社 Evaluation of bone
US4663772A (en) * 1985-09-30 1987-05-05 Picker International, Inc. Bone mineral analysis phantom
EP0228785B1 (en) * 1985-11-11 1993-01-13 Teijin Limited Bone evaluation method
US4811373A (en) * 1986-07-14 1989-03-07 Hologic, Inc. Bone densitometer
US5044002A (en) * 1986-07-14 1991-08-27 Hologic, Inc. Baggage inspection and the like
US4947414A (en) * 1986-07-14 1990-08-07 Hologic, Inc. Bone densitometer
US5040199A (en) * 1986-07-14 1991-08-13 Hologic, Inc. Apparatus and method for analysis using x-rays
US5148455A (en) * 1986-07-14 1992-09-15 Hologic, Inc. Bone densitometer
USRE34511E (en) * 1987-05-15 1994-01-18 Hologic, Inc. Method of radiologically scanning the spine for measuring bone density
US5572998A (en) * 1987-05-15 1996-11-12 Hologic, Inc. Method of scanning the spine of a patient to determine bone density along two different axes
US5165410A (en) 1987-05-15 1992-11-24 Medical & Scientific Enterprises, Inc. Position indicating system for a multidiagnostic scanner
US6230036B1 (en) 1987-05-15 2001-05-08 Hologic, Inc. System for radiologically scanning the spine for measuring bone density
US4986273A (en) * 1989-08-07 1991-01-22 Medical & Scientific Enterprises, Inc. Method of radiologically scanning the spine for measuring bone density
DE3855873T2 (en) * 1987-05-15 1997-10-23 Medical & Scient Enterprises I X-RAY DEVICE FOR MEASURING BONE DENSITY
US4910757A (en) * 1987-11-06 1990-03-20 Hitachi, Ltd. Method and apparatus for X-ray imaging
US5090040A (en) * 1989-03-10 1992-02-18 Expert Image Systems, Inc. Data acquisition system for radiographic imaging
US5005196A (en) * 1989-03-10 1991-04-02 Expert Image Systems, Inc. Limb positioning and calibration apparatus for radiographic imaging
US6031892A (en) 1989-12-05 2000-02-29 University Of Massachusetts Medical Center System for quantitative radiographic imaging
US5150394A (en) 1989-12-05 1992-09-22 University Of Massachusetts Medical School Dual-energy system for quantitative radiographic imaging
US5319547A (en) * 1990-08-10 1994-06-07 Vivid Technologies, Inc. Device and method for inspection of baggage and other objects
US5838765A (en) * 1993-11-22 1998-11-17 Hologic, Inc. Whole-body x-ray bone densitometry using a narrow-angle fan beam, including variable fan beam displacement between scan passes
US5432834A (en) * 1993-11-22 1995-07-11 Hologic, Inc. Whole-body dual-energy bone densitometry using a narrow angle fan beam to cover the entire body in successive scans
US6059455A (en) * 1993-11-22 2000-05-09 Hologic, Inc. Portable X-ray bone densitometry system
US5687211A (en) * 1993-11-22 1997-11-11 Hologic, Inc. Bone densitometry scanning system and method for selecting scan parametric values using x-ray thickness measurement
US5748705A (en) * 1993-11-22 1998-05-05 Hologic Inc. X-ray bone densitometry
US6217214B1 (en) 1993-11-22 2001-04-17 Hologic, Inc. X-ray bone densitometry apparatus
US5715820A (en) * 1995-06-06 1998-02-10 Hologic, Inc. X-ray bone densitometry using multiple pass scanning with image blending
US5852647A (en) * 1997-09-24 1998-12-22 Schick Technologies Method and apparatus for measuring bone density
AU2887499A (en) 1998-03-02 1999-09-20 Image Anaylsis, Inc. Automated x-ray bone densitometer
WO2000068710A2 (en) 1999-05-10 2000-11-16 Lippens Francois Energy-selective x-ray radiation detection system
GB2382135A (en) * 2001-11-20 2003-05-21 Spectral Fusion Technologies L X-ray apparatus for grading meat samples according to a predetermined meat to fat ratio
US6990222B2 (en) * 2001-11-21 2006-01-24 Arnold Ben A Calibration of tissue densities in computerized tomography
AU2003224348A1 (en) * 2002-05-02 2003-11-17 Csir Bone densitometry and mammography
KR100832485B1 (en) 2006-11-04 2008-05-26 박영웅 Method and Apparatus for Measuring the Density, the Component, and the Composition of Materials by Using Dual Radiation
KR100982000B1 (en) 2008-03-28 2010-09-13 주식회사 씨알테크놀러지 Bone Density Measurement Device Using Photon Counting Detection And Method Thereof
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Also Published As

Publication number Publication date
SE373279B (en) 1975-02-03
JPS5048993A (en) 1975-05-01
GB1446818A (en) 1976-08-18
CA1006989A (en) 1977-03-15
US3944830A (en) 1976-03-16
DE2421649A1 (en) 1974-11-21

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